Visiting local bars in Guigang is more fun when the weather is good. These temperatures and rainfall averages can help you determine the best time for bar-hopping. The hottest months are usually August and July, with an average temperature of 28°C, while the coldest months are January and December, with an average of 16°C. The rainiest months in Guigang are June, May, August and July, with each month seeing an average of 260 mm of rainfall.